Hello!
Yesterday I spent the whole procedure from the beginning)))
Updated via DJI go up to 1.8.1
And then, downgrading from DEBUG to 1.7.9, everything went well, in the dji version of the firmware of the Copter 1.7.9 without +
Further the same way up to 1.6.8, all ok
From 1.6.8 to 1.5.7...